Test Description

WARNING: This page is about a different variant/trim than selected.

NOTE: Test numbers refer to numbers on diagnostic chart.

Tech 1 will enable circuit for 5 seconds.
This check can detect a partially shorted coil which would cause excessive current flow. Excessive current flow to a QDM will be detected as a fault and set a code.
The remaining checks will identify a circuit problem that has caused an excessive current flow or inoperative relay.

Fig 1: Code 70 Schematic (Corvette) A/C Compressor Relay Driver

Fig 2: Code 70 Diagnostic Flow Chart (Corvette) A/C Compressor Relay Driver